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Conducting Molecular Multilayers: Intercalation of Conjugated Polymers in Layered Media

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Abstract

Polyaniline has been synthesized in the galleries of fluorohectorite, a two-dimensional mica-type layered silicate. Intercalation of aniline in the intracrystalline region of Cu-exchanged fluorohectorite results in oxidative polymerization to polyaniline (emeraldine base form) as demonstrated by electronic, infrared and Raman spectroscopy and x-ray diffraction data. The intercalated insulating form of polyaniline becomes conducting on exposure to HCl. In-plane electrical conductivity data measured in the temperature range 274 to 573 K show a complex thermally activated behavior with room temperature conductivity 0.05 Ohm−1cm−1. The polyaniline/layered silicate hybrids represent a new class of nanocomposites consisting of synthetic conductors with molecular dimensions contained in a quasi twodimensional environment of a crystalline host.

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Mehrotra, V., Giannelis, E.P. Conducting Molecular Multilayers: Intercalation of Conjugated Polymers in Layered Media. MRS Online Proceedings Library 171, 39–44 (1989). https://doi.org/10.1557/PROC-171-39

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  • DOI: https://doi.org/10.1557/PROC-171-39

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